Two further people have been reported missing in the water following 17 confirmed deaths amid the UK heatwave.
Swimmers looking to cool off are being urged to take care in open water as the Royal Life Saving Society UK (RLSS UK) said it is aware of 17 incidents of accidental loss of life in the water between July 17 and July 20.
There have been two further reports of people going missing in the water who are yet to be found.
Emergency services are currently searching for a boy who went missing while swimming in the River Dee in Chester, according to Chester Live.
A police helicopter has also been seen circling the area up and down the river and a search and rescue team are there, as well as air ambulance, ambulance, police and fire crews.
All the incidents have occurred in England, except for one which happened in Northern Ireland.
West Yorkshire Police also issued a warning about swimming in open water in hot weather after they recovered the body of a 15-year-old boy, from Stocking Lane in Knottingley, who was pronounced dead at the scene on Tuesday.
Merseyside Police said that a man had died and two others were taken to hospital following an incident at Crosby Beach on Tuesday.
The force said officers were called at around 7.10pm following reports of three men in their 20s getting into difficulties in the sea.
Lee Heard, RLSS UK’s charity director, said: “Whilst we recognise how tempting it is to cool off in the UK’s beautiful waterways, they hide hazards that tragically take lives each year and we urge the public to use caution when entering the water, getting acclimatised to the water temperature before jumping in.
“The difference between the air temperature and water temperature can literally take your breath away; this is called cold water shock. It is silent, invisible and deadly.
“Water can also hide debris, strong currents and sudden changes in depth that can catch out even the strongest swimmers.
“The Royal Life Saving Society UK urge everyone to learn vital skills and knowledge to prevent future accidental drownings.”
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